| Title |
An Effect of the Mixing Factor Influencing to the Properties of High-Performance Concrete |
| Authors |
한천구 ; 반호용 ; 조병영 ; 윤기원 ; 이정희 |
| Abstract |
This study is designed for analyzing the properties of high-performance concrete with the parameters of water contents, S/A ratio(sand/aggregate ratio), and cement replacement method of pozzolanic admixture when the water binder ratio are 25~35%. From experimental results, to the fresh concrete ; water contents was good to 177~183kg/m3. And S/A showed good to 44~47%. To the replacing change of fly ash and silica fume, the flowability is good when the replacing ratio of fly ash increases. The placeability is best in the ratio of 15 to 5 ; F.A : S.F and the segregation-resistibility is appeared good when thereplacing ratio of silica fume increases. To the hardened concrete ; it's known that the compressive strength has little relation to the influence of water contents and S/A. And the compressive strength is high when the replacing ratio of silica fume increases. It was discovered that tensile strength is about 1/11.5, compared with compressive strength and bending strength. is 1/5.5 compared with that. It is found that the difference between standard tamping and nontamping of compressive strength is little. In the case of drying shrinkage, it shows high values when the water contents and the S/A is large, and the replacing ratio of silica fume increases. |